Messages left for sheriff's officials and prosecutors were not immediately returned to The Associated Press.

Hoffner was escorted off the football practice field Friday. Dan Benson, a spokesman at Minnesota State, Mankato, tells the AP Hoffner is on leave. He says the university is working on a statement.

Hoffner was named the 2009 NSIC coach of the year.

Hoffner graduated from Valley City (N.D.) State in 1989 where he played football and ran track, according to his biography on the Mankato website. He earned a master’s degree from North Dakota in 1991.